Hoshino turned pro in 1988 and captured the WBA minimumweight title with a decision win over
Joma Gamboa in 2000. He defended the belt once before losing it by split decision to
Chana Porpaoin in 2001. He recaptured the vacant WBA minimumweight title with a decision win over Gamboa in 2002, but lost the belt in his first defense to
Noel Arambulet. ==Professional boxing record==